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<h2><span class="refentrytitle">Struct template match_results</span></h2>
<p>boost::xpressive::match_results — Class template <a class="link" href="structboost_1_1xpressive_1_1match__results.html" title="Struct template match_results">match_results</a>&lt;&gt; holds the results of a <a class="link" href="namespaceboost_1_1xpressive_1a7549c8bcd5ce2471d42aaad4e409d148.html" title="Function regex_match">regex_match()</a> or a <a class="link" href="namespaceboost_1_1xpressive_1a1194c854fb35ddb2d0b216a303263bb3.html" title="Function regex_search">regex_search()</a> as a collection of <a class="link" href="structboost_1_1xpressive_1_1sub__match.html" title="Struct template sub_match">sub_match</a> objects. </p>
</div>
<h2 class="refsynopsisdiv-title">Synopsis</h2>
<div class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: &lt;<a class="link" href="../xpressive/reference.html#doxygen.xpressive__fwd_8hpp" title="Header &lt;boost/xpressive/xpressive_fwd.hpp&gt;">boost/xpressive/xpressive_fwd.hpp</a>&gt;

</span><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> BidiIter<span class="special">&gt;</span> 
<span class="keyword">struct</span> <a class="link" href="structboost_1_1xpressive_1_1match__results.html" title="Struct template match_results">match_results</a> <span class="special">{</span>

  <span class="comment">// <a class="link" href="structboost_1_1xpressive_1_1match__results.html#id-1_3_44_5_18_2_1_7_4-bb">public member functions</a></span>
  <a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1a6be22563474ea03b42a77bdd3eae633c"><span class="identifier">match_results</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
  <a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1ad1045ebfa8313dba278c26bad6c6acc6"><span class="identifier">match_results</span></a><span class="special">(</span><a class="link" href="structboost_1_1xpressive_1_1match__results.html" title="Struct template match_results">match_results</a><span class="special">&lt;</span> <span class="identifier">BidiIter</span> <span class="special">&gt;</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1a0601369b788fc6d8c4e8f8a718073b79"><span class="special">~</span><span class="identifier">match_results</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
  <a class="link" href="structboost_1_1xpressive_1_1match__results.html" title="Struct template match_results">match_results</a><span class="special">&lt;</span> <span class="identifier">BidiIter</span> <span class="special">&gt;</span> <span class="special">&amp;</span> <a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1a95b0ecdf1ae7f610985a9684ab05dd83"><span class="keyword">operator</span><span class="special">=</span></a><span class="special">(</span><a class="link" href="structboost_1_1xpressive_1_1match__results.html" title="Struct template match_results">match_results</a><span class="special">&lt;</span> <span class="identifier">BidiIter</span> <span class="special">&gt;</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="identifier">size_type</span> <a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1aaa956a09fc346a667dc2d8fc53f4d865"><span class="identifier">size</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="keyword">bool</span> <a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1a910c698d1014fc4a9a1fc999acd6895c"><span class="identifier">empty</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">difference_type</span> <a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1aba6c60a81efe76e74f9f0ec3a9f38695"><span class="identifier">length</span></a><span class="special">(</span><span class="identifier">size_type</span> <span class="special">=</span> <span class="number">0</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">difference_type</span> <a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1a2061292cfca09270465316b6147d8826"><span class="identifier">position</span></a><span class="special">(</span><span class="identifier">size_type</span> <span class="special">=</span> <span class="number">0</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">string_type</span> <a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1aa7536ad835012a993b38b1037d15b245"><span class="identifier">str</span></a><span class="special">(</span><span class="identifier">size_type</span> <span class="special">=</span> <span class="number">0</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Sub<span class="special">&gt;</span> <span class="identifier">const_reference</span> <a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1a19e7c118f7f906d6a596de84416c990c"><span class="keyword">operator</span><span class="special">[</span><span class="special">]</span></a><span class="special">(</span><span class="identifier">Sub</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">const_reference</span> <a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1a384dd5a758e71aaab17970a72762cf7c"><span class="identifier">prefix</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">const_reference</span> <a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1aa33bd2a5539f16645fa1fc257d1cdb66"><span class="identifier">suffix</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">const_iterator</span> <a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1add11c3161b3cd65a4d083cd3997ccfa1"><span class="identifier">begin</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">const_iterator</span> <a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1a92ca9e59b8ef50f5d144dc3dcad505db"><span class="identifier">end</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1a44c2eccd80a301a0255e1f1689c18c9e"><span class="keyword">operator</span> <span class="identifier">bool_type</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="keyword">bool</span> <a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1a5415b39349b2c3e1a9d5641910c4fc02"><span class="keyword">operator</span><span class="special">!</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">regex_id_type</span> <a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1a6c8192b66806890d65b5fade49bc639c"><span class="identifier">regex_id</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">nested_results_type</span> <span class="keyword">const</span> <span class="special">&amp;</span> <a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1aae3f3d71947b4e3e16312d7eb7c6178e"><span class="identifier">nested_results</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Format<span class="special">,</span> <span class="keyword">typename</span> <a class="link" href="../OutputIterator.html" title="Concept OutputIterator">OutputIterator</a><span class="special">&gt;</span> 
    <span class="identifier">OutputIterator</span> 
    <a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1a556bb72498a1b08d78bc23d86445f13b"><span class="identifier">format</span></a><span class="special">(</span><span class="identifier">OutputIterator</span><span class="special">,</span> <span class="identifier">Format</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">,</span> 
           <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">match_flag_type</span> <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">format_default</span><span class="special">,</span> 
           <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> <span class="special">=</span> <span class="number">0</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <a class="link" href="../OutputIterator.html" title="Concept OutputIterator">OutputIterator</a><span class="special">&gt;</span> 
    <span class="identifier">OutputIterator</span> 
    <a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1a3bc402f6f3f68ffee664ee27a0365848"><span class="identifier">format</span></a><span class="special">(</span><span class="identifier">OutputIterator</span><span class="special">,</span> <span class="identifier">char_type</span> <span class="keyword">const</span> <span class="special">*</span><span class="special">,</span> 
           <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">match_flag_type</span> <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">format_default</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Format<span class="special">,</span> <span class="keyword">typename</span> <a class="link" href="../OutputIterator.html" title="Concept OutputIterator">OutputIterator</a><span class="special">&gt;</span> 
    <span class="identifier">string_type</span> <a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1ae953529ad7fe9887f4dbe714d9d897e5"><span class="identifier">format</span></a><span class="special">(</span><span class="identifier">Format</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">,</span> 
                       <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">match_flag_type</span> <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">format_default</span><span class="special">,</span> 
                       <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> <span class="special">=</span> <span class="number">0</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">string_type</span> <a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1a639c034ede34beb44357377fbda115f2"><span class="identifier">format</span></a><span class="special">(</span><span class="identifier">char_type</span> <span class="keyword">const</span> <span class="special">*</span><span class="special">,</span> 
                     <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">match_flag_type</span> <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">format_default</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="keyword">void</span> <a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1aeabd8d33f39ae7cd3a6754b2a67d92b0"><span class="identifier">swap</span></a><span class="special">(</span><a class="link" href="structboost_1_1xpressive_1_1match__results.html" title="Struct template match_results">match_results</a><span class="special">&lt;</span> <span class="identifier">BidiIter</span> <span class="special">&gt;</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Arg<span class="special">&gt;</span> <a class="link" href="structboost_1_1xpressive_1_1match__results.html" title="Struct template match_results">match_results</a><span class="special">&lt;</span> <span class="identifier">BidiIter</span> <span class="special">&gt;</span> <span class="special">&amp;</span> <a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1a0b5d9b054f18782e2e195dab5e39123a"><span class="identifier">let</span></a><span class="special">(</span><span class="identifier">Arg</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
<span class="special">}</span><span class="special">;</span></pre></div>
<div class="refsect1">
<a name="id-1.3.44.5.19.17.4"></a><h2>Description</h2>
<p>Class template <a class="link" href="structboost_1_1xpressive_1_1match__results.html" title="Struct template match_results">match_results</a>&lt;&gt; denotes a collection of sequences representing the result of a regular expression match. Storage for the collection is allocated and freed as necessary by the member functions of class <a class="link" href="structboost_1_1xpressive_1_1match__results.html" title="Struct template match_results">match_results</a>&lt;&gt;.</p>
<p>The class template <a class="link" href="structboost_1_1xpressive_1_1match__results.html" title="Struct template match_results">match_results</a>&lt;&gt; conforms to the requirements of a Sequence, as specified in (lib.sequence.reqmts), except that only operations defined for const-qualified Sequences are supported. </p>
<div class="refsect2">
<a name="id-1.3.44.5.19.17.4.4"></a><h3>
<a name="id-1_3_44_5_18_2_1_7_4-bb"></a><code class="computeroutput">match_results</code> public member functions</h3>
<div class="orderedlist"><ol class="orderedlist" type="1">
<li class="listitem">
<pre class="literallayout"><a name="doxygen.structboost_1_1xpressive_1_1match__results_1a6be22563474ea03b42a77bdd3eae633c"></a><span class="identifier">match_results</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>
<p>



</p>
<div class="variablelist"><table border="0" class="variablelist compact">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term">Postconditions:</span></p></td>
<td><p><a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1a6c8192b66806890d65b5fade49bc639c">regex_id()</a> == 0 </p></td>
</tr>
<tr>
<td><p><span class="term">Postconditions:</span></p></td>
<td><p><a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1aaa956a09fc346a667dc2d8fc53f4d865">size()</a> == 0 </p></td>
</tr>
<tr>
<td><p><span class="term">Postconditions:</span></p></td>
<td><p><a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1a910c698d1014fc4a9a1fc999acd6895c">empty()</a> == true </p></td>
</tr>
<tr>
<td><p><span class="term">Postconditions:</span></p></td>
<td><p><a class="link" href="namespaceboost_1_1xpressive_1a3359fafa9e5c7964a0bd5364de930e9c.html" title="Global str">str()</a> == <a class="link" href="../">string_type()</a> </p></td>
</tr>
</tbody>
</table></div>
</li>
<li class="listitem">
<pre class="literallayout"><a name="doxygen.structboost_1_1xpressive_1_1match__results_1ad1045ebfa8313dba278c26bad6c6acc6"></a><span class="identifier">match_results</span><span class="special">(</span><a class="link" href="structboost_1_1xpressive_1_1match__results.html" title="Struct template match_results">match_results</a><span class="special">&lt;</span> <span class="identifier">BidiIter</span> <span class="special">&gt;</span> <span class="keyword">const</span> <span class="special">&amp;</span> that<span class="special">)</span><span class="special">;</span></pre>
<p>









</p>
<div class="variablelist"><table border="0" class="variablelist compact">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
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<td><p><span class="term">Parameters:</span></p></td>
<td><div class="variablelist"><table border="0" class="variablelist compact">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody><tr>
<td><p><span class="term"><code class="computeroutput">that</code></span></p></td>
<td><p>The <a class="link" href="structboost_1_1xpressive_1_1match__results.html" title="Struct template match_results">match_results</a> object to copy </p></td>
</tr></tbody>
</table></div></td>
</tr>
<tr>
<td><p><span class="term">Postconditions:</span></p></td>
<td><p><a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1a6c8192b66806890d65b5fade49bc639c">regex_id()</a> == that.regex_id(). </p></td>
</tr>
<tr>
<td><p><span class="term">Postconditions:</span></p></td>
<td><p><a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1aaa956a09fc346a667dc2d8fc53f4d865">size()</a> == that.size(). </p></td>
</tr>
<tr>
<td><p><span class="term">Postconditions:</span></p></td>
<td><p><a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1a910c698d1014fc4a9a1fc999acd6895c">empty()</a> == that.empty(). </p></td>
</tr>
<tr>
<td><p><span class="term">Postconditions:</span></p></td>
<td><p><a class="link" href="namespaceboost_1_1xpressive_1a3359fafa9e5c7964a0bd5364de930e9c.html" title="Global str">str(n)</a> == that.str(n) for all positive integers n &lt; that.size(). </p></td>
</tr>
<tr>
<td><p><span class="term">Postconditions:</span></p></td>
<td><p><a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1a384dd5a758e71aaab17970a72762cf7c">prefix()</a> == that.prefix(). </p></td>
</tr>
<tr>
<td><p><span class="term">Postconditions:</span></p></td>
<td><p><a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1aa33bd2a5539f16645fa1fc257d1cdb66">suffix()</a> == that.suffix(). </p></td>
</tr>
<tr>
<td><p><span class="term">Postconditions:</span></p></td>
<td><p>(*this)[n] == that[n] for all positive integers n &lt; that.size(). </p></td>
</tr>
<tr>
<td><p><span class="term">Postconditions:</span></p></td>
<td><p><a class="link" href="namespaceboost_1_1xpressive_1ac007382aa804f2950e4b9d5087e11cc1.html" title="Global length">length(n)</a> == that.length(n) for all positive integers n &lt; that.size(). </p></td>
</tr>
<tr>
<td><p><span class="term">Postconditions:</span></p></td>
<td><p>position(n) == that.position(n) for all positive integers n &lt; that.size(). </p></td>
</tr>
</tbody>
</table></div>
</li>
<li class="listitem"><pre class="literallayout"><a name="doxygen.structboost_1_1xpressive_1_1match__results_1a0601369b788fc6d8c4e8f8a718073b79"></a><span class="special">~</span><span class="identifier">match_results</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre></li>
<li class="listitem">
<pre class="literallayout"><a class="link" href="structboost_1_1xpressive_1_1match__results.html" title="Struct template match_results">match_results</a><span class="special">&lt;</span> <span class="identifier">BidiIter</span> <span class="special">&gt;</span> <span class="special">&amp;</span> <a name="doxygen.structboost_1_1xpressive_1_1match__results_1a95b0ecdf1ae7f610985a9684ab05dd83"></a><span class="keyword">operator</span><span class="special">=</span><span class="special">(</span><a class="link" href="structboost_1_1xpressive_1_1match__results.html" title="Struct template match_results">match_results</a><span class="special">&lt;</span> <span class="identifier">BidiIter</span> <span class="special">&gt;</span> <span class="keyword">const</span> <span class="special">&amp;</span> that<span class="special">)</span><span class="special">;</span></pre>
<p>









</p>
<div class="variablelist"><table border="0" class="variablelist compact">
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<col align="left" valign="top">
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<tbody>
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<td><p><span class="term">Parameters:</span></p></td>
<td><div class="variablelist"><table border="0" class="variablelist compact">
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<col align="left" valign="top">
<col>
</colgroup>
<tbody><tr>
<td><p><span class="term"><code class="computeroutput">that</code></span></p></td>
<td><p>The <a class="link" href="structboost_1_1xpressive_1_1match__results.html" title="Struct template match_results">match_results</a> object to copy. </p></td>
</tr></tbody>
</table></div></td>
</tr>
<tr>
<td><p><span class="term">Postconditions:</span></p></td>
<td><p><a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1a6c8192b66806890d65b5fade49bc639c">regex_id()</a> == that.regex_id(). </p></td>
</tr>
<tr>
<td><p><span class="term">Postconditions:</span></p></td>
<td><p><a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1aaa956a09fc346a667dc2d8fc53f4d865">size()</a> == that.size(). </p></td>
</tr>
<tr>
<td><p><span class="term">Postconditions:</span></p></td>
<td><p><a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1a910c698d1014fc4a9a1fc999acd6895c">empty()</a> == that.empty(). </p></td>
</tr>
<tr>
<td><p><span class="term">Postconditions:</span></p></td>
<td><p><a class="link" href="namespaceboost_1_1xpressive_1a3359fafa9e5c7964a0bd5364de930e9c.html" title="Global str">str(n)</a> == that.str(n) for all positive integers n &lt; that.size(). </p></td>
</tr>
<tr>
<td><p><span class="term">Postconditions:</span></p></td>
<td><p><a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1a384dd5a758e71aaab17970a72762cf7c">prefix()</a> == that.prefix(). </p></td>
</tr>
<tr>
<td><p><span class="term">Postconditions:</span></p></td>
<td><p><a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1aa33bd2a5539f16645fa1fc257d1cdb66">suffix()</a> == that.suffix(). </p></td>
</tr>
<tr>
<td><p><span class="term">Postconditions:</span></p></td>
<td><p>(*this)[n] == that[n] for all positive integers n &lt; that.size(). </p></td>
</tr>
<tr>
<td><p><span class="term">Postconditions:</span></p></td>
<td><p><a class="link" href="namespaceboost_1_1xpressive_1ac007382aa804f2950e4b9d5087e11cc1.html" title="Global length">length(n)</a> == that.length(n) for all positive integers n &lt; that.size(). </p></td>
</tr>
<tr>
<td><p><span class="term">Postconditions:</span></p></td>
<td><p>position(n) == that.position(n) for all positive integers n &lt; that.size(). </p></td>
</tr>
</tbody>
</table></div>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">size_type</span> <a name="doxygen.structboost_1_1xpressive_1_1match__results_1aaa956a09fc346a667dc2d8fc53f4d865"></a><span class="identifier">size</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Returns one plus the number of marked sub-expressions in the regular expression that was matched if *this represents the result of a successful match. Otherwise returns 0. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">bool</span> <a name="doxygen.structboost_1_1xpressive_1_1match__results_1a910c698d1014fc4a9a1fc999acd6895c"></a><span class="identifier">empty</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Returns <a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1aaa956a09fc346a667dc2d8fc53f4d865">size()</a> == 0. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">difference_type</span> <a name="doxygen.structboost_1_1xpressive_1_1match__results_1aba6c60a81efe76e74f9f0ec3a9f38695"></a><span class="identifier">length</span><span class="special">(</span><span class="identifier">size_type</span> sub <span class="special">=</span> <span class="number">0</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Returns (*this)[sub].<a class="link" href="namespaceboost_1_1xpressive_1ac007382aa804f2950e4b9d5087e11cc1.html" title="Global length">length()</a>. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">difference_type</span> <a name="doxygen.structboost_1_1xpressive_1_1match__results_1a2061292cfca09270465316b6147d8826"></a><span class="identifier">position</span><span class="special">(</span><span class="identifier">size_type</span> sub <span class="special">=</span> <span class="number">0</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>If !(*this)[sub].matched then returns -1. Otherwise returns std::distance(base, (*this)[sub].first), where base is the start iterator of the sequence that was searched. [Note - unless this is part of a repeated search with a <a class="link" href="structboost_1_1xpressive_1_1regex__iterator.html" title="Struct template regex_iterator">regex_iterator</a> then base is the same as <a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1a384dd5a758e71aaab17970a72762cf7c">prefix()</a>.first - end note] </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">string_type</span> <a name="doxygen.structboost_1_1xpressive_1_1match__results_1aa7536ad835012a993b38b1037d15b245"></a><span class="identifier">str</span><span class="special">(</span><span class="identifier">size_type</span> sub <span class="special">=</span> <span class="number">0</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Returns (*this)[sub].<a class="link" href="namespaceboost_1_1xpressive_1a3359fafa9e5c7964a0bd5364de930e9c.html" title="Global str">str()</a>. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Sub<span class="special">&gt;</span> <span class="identifier">const_reference</span> <a name="doxygen.structboost_1_1xpressive_1_1match__results_1a19e7c118f7f906d6a596de84416c990c"></a><span class="keyword">operator</span><span class="special">[</span><span class="special">]</span><span class="special">(</span><span class="identifier">Sub</span> <span class="keyword">const</span> <span class="special">&amp;</span> sub<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Returns a reference to the <a class="link" href="structboost_1_1xpressive_1_1sub__match.html" title="Struct template sub_match">sub_match</a> object representing the sequence that matched marked sub-expression sub. If sub == 0 then returns a reference to a <a class="link" href="structboost_1_1xpressive_1_1sub__match.html" title="Struct template sub_match">sub_match</a> object representing the sequence that matched the whole regular expression. If sub &gt;= <a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1aaa956a09fc346a667dc2d8fc53f4d865">size()</a> then returns a <a class="link" href="structboost_1_1xpressive_1_1sub__match.html" title="Struct template sub_match">sub_match</a> object representing an unmatched sub-expression. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">const_reference</span> <a name="doxygen.structboost_1_1xpressive_1_1match__results_1a384dd5a758e71aaab17970a72762cf7c"></a><span class="identifier">prefix</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Returns a reference to the <a class="link" href="structboost_1_1xpressive_1_1sub__match.html" title="Struct template sub_match">sub_match</a> object representing the character sequence from the start of the string being matched/searched, to the start of the match found.</p>
<p>
</p>
<div class="variablelist"><table border="0" class="variablelist compact">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody><tr>
<td><p><span class="term">Requires:</span></p></td>
<td><p>(*this)[0].matched is true </p></td>
</tr></tbody>
</table></div>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">const_reference</span> <a name="doxygen.structboost_1_1xpressive_1_1match__results_1aa33bd2a5539f16645fa1fc257d1cdb66"></a><span class="identifier">suffix</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Returns a reference to the <a class="link" href="structboost_1_1xpressive_1_1sub__match.html" title="Struct template sub_match">sub_match</a> object representing the character sequence from the end of the match found to the end of the string being matched/searched.</p>
<p>
</p>
<div class="variablelist"><table border="0" class="variablelist compact">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody><tr>
<td><p><span class="term">Requires:</span></p></td>
<td><p>(*this)[0].matched is true </p></td>
</tr></tbody>
</table></div>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">const_iterator</span> <a name="doxygen.structboost_1_1xpressive_1_1match__results_1add11c3161b3cd65a4d083cd3997ccfa1"></a><span class="identifier">begin</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Returns a starting iterator that enumerates over all the marked sub-expression matches stored in *this. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">const_iterator</span> <a name="doxygen.structboost_1_1xpressive_1_1match__results_1a92ca9e59b8ef50f5d144dc3dcad505db"></a><span class="identifier">end</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Returns a terminating iterator that enumerates over all the marked sub-expression matches stored in *this. </p>
</li>
<li class="listitem">
<pre class="literallayout"><a name="doxygen.structboost_1_1xpressive_1_1match__results_1a44c2eccd80a301a0255e1f1689c18c9e"></a><span class="keyword">operator</span> <span class="identifier">bool_type</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Returns a true value if (*this)[0].matched, else returns a false value. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">bool</span> <a name="doxygen.structboost_1_1xpressive_1_1match__results_1a5415b39349b2c3e1a9d5641910c4fc02"></a><span class="keyword">operator</span><span class="special">!</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Returns true if <a class="link" href="structboost_1_1xpressive_1_1match__results.html#doxygen.structboost_1_1xpressive_1_1match__results_1a910c698d1014fc4a9a1fc999acd6895c">empty()</a> || !(*this)[0].matched, else returns false. </p>
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<li class="listitem">
<pre class="literallayout"><span class="identifier">regex_id_type</span> <a name="doxygen.structboost_1_1xpressive_1_1match__results_1a6c8192b66806890d65b5fade49bc639c"></a><span class="identifier">regex_id</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Returns the id of the <a class="link" href="structboost_1_1xpressive_1_1basic__regex.html" title="Struct template basic_regex">basic_regex</a> object most recently used with this <a class="link" href="structboost_1_1xpressive_1_1match__results.html" title="Struct template match_results">match_results</a> object. </p>
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<pre class="literallayout"><span class="identifier">nested_results_type</span> <span class="keyword">const</span> <span class="special">&amp;</span> <a name="doxygen.structboost_1_1xpressive_1_1match__results_1aae3f3d71947b4e3e16312d7eb7c6178e"></a><span class="identifier">nested_results</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Returns a Sequence of nested <a class="link" href="structboost_1_1xpressive_1_1match__results.html" title="Struct template match_results">match_results</a> elements. </p>
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<li class="listitem">
<pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Format<span class="special">,</span> <span class="keyword">typename</span> <a class="link" href="../OutputIterator.html" title="Concept OutputIterator">OutputIterator</a><span class="special">&gt;</span> 
  <span class="identifier">OutputIterator</span> 
  <a name="doxygen.structboost_1_1xpressive_1_1match__results_1a556bb72498a1b08d78bc23d86445f13b"></a><span class="identifier">format</span><span class="special">(</span><span class="identifier">OutputIterator</span> out<span class="special">,</span> <span class="identifier">Format</span> <span class="keyword">const</span> <span class="special">&amp;</span> fmt<span class="special">,</span> 
         <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">match_flag_type</span> flags <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">format_default</span><span class="special">,</span> 
         <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> <span class="special">=</span> <span class="number">0</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>If <code class="computeroutput">Format</code> models <code class="computeroutput">ForwardRange</code> or is a null-terminated string, this function copies the character sequence in <code class="computeroutput">fmt</code> to <code class="computeroutput">OutputIterator</code> <code class="computeroutput">out</code>. For each format specifier or escape sequence in <code class="computeroutput">fmt</code>, replace that sequence with either the character(s) it represents, or the sequence within <code class="computeroutput">*this</code> to which it refers. The bitmasks specified in flags determines what format specifiers or escape sequences are recognized. By default, this is the format used by ECMA-262, ECMAScript Language Specification, Chapter 15 part 5.4.11 String.prototype.replace.</p>
<p>Otherwise, if <code class="computeroutput">Format</code> models <code class="computeroutput">Callable&lt;<a class="link" href="structboost_1_1xpressive_1_1match__results.html" title="Struct template match_results">match_results</a>&lt;BidiIter&gt;, OutputIterator, <a class="link" href="namespaceboost_1_1xpressive_1_1regex__constants_1a1d1ca85be825c97268dc89c28fce4084.html" title="Type match_flag_type">regex_constants::match_flag_type</a>&gt;</code>, this function returns <code class="computeroutput">fmt(*this, out, flags)</code>.</p>
<p>Otherwise, if <code class="computeroutput">Format</code> models <code class="computeroutput">Callable&lt;<a class="link" href="structboost_1_1xpressive_1_1match__results.html" title="Struct template match_results">match_results</a>&lt;BidiIter&gt;, OutputIterator&gt;</code>, this function returns <code class="computeroutput">fmt(*this, out)</code>.</p>
<p>Otherwise, if <code class="computeroutput">Format</code> models <code class="computeroutput">Callable&lt;<a class="link" href="structboost_1_1xpressive_1_1match__results.html" title="Struct template match_results">match_results</a>&lt;BidiIter&gt; &gt;</code>, this function returns <code class="computeroutput">std::copy(x.begin(), x.end(), out)</code>, where <code class="computeroutput">x</code> is the result of calling <code class="computeroutput">fmt(*this)</code>. </p>
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<li class="listitem">
<pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <a class="link" href="../OutputIterator.html" title="Concept OutputIterator">OutputIterator</a><span class="special">&gt;</span> 
  <span class="identifier">OutputIterator</span> 
  <a name="doxygen.structboost_1_1xpressive_1_1match__results_1a3bc402f6f3f68ffee664ee27a0365848"></a><span class="identifier">format</span><span class="special">(</span><span class="identifier">OutputIterator</span> out<span class="special">,</span> <span class="identifier">char_type</span> <span class="keyword">const</span> <span class="special">*</span> fmt<span class="special">,</span> 
         <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">match_flag_type</span> flags <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">format_default</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Format<span class="special">,</span> <span class="keyword">typename</span> <a class="link" href="../OutputIterator.html" title="Concept OutputIterator">OutputIterator</a><span class="special">&gt;</span> 
  <span class="identifier">string_type</span> <a name="doxygen.structboost_1_1xpressive_1_1match__results_1ae953529ad7fe9887f4dbe714d9d897e5"></a><span class="identifier">format</span><span class="special">(</span><span class="identifier">Format</span> <span class="keyword">const</span> <span class="special">&amp;</span> fmt<span class="special">,</span> 
                     <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">match_flag_type</span> flags <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">format_default</span><span class="special">,</span> 
                     <span class="emphasis"><em><span class="identifier">unspecified</span></em></span> <span class="special">=</span> <span class="number">0</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>If <code class="computeroutput">Format</code> models <code class="computeroutput">ForwardRange</code> or is a null-terminated string, this function returns a copy of the character sequence <code class="computeroutput">fmt</code>. For each format specifier or escape sequence in <code class="computeroutput">fmt</code>, replace that sequence with either the character(s) it represents, or the sequence within <code class="computeroutput">*this</code> to which it refers. The bitmasks specified in <code class="computeroutput">flags</code> determines what format specifiers or escape sequences are recognized. By default this is the format used by ECMA-262, ECMAScript Language Specification, Chapter 15 part 5.4.11 String.prototype.replace.</p>
<p>Otherwise, if <code class="computeroutput">Format</code> models <code class="computeroutput">Callable&lt;<a class="link" href="structboost_1_1xpressive_1_1match__results.html" title="Struct template match_results">match_results</a>&lt;BidiIter&gt;, OutputIterator, <a class="link" href="namespaceboost_1_1xpressive_1_1regex__constants_1a1d1ca85be825c97268dc89c28fce4084.html" title="Type match_flag_type">regex_constants::match_flag_type</a>&gt;</code>, this function returns a <code class="computeroutput">string_type</code> object <code class="computeroutput">x</code> populated by calling <code class="computeroutput">fmt(*this, out, flags)</code>, where <code class="computeroutput">out</code> is a <code class="computeroutput">back_insert_iterator</code> into <code class="computeroutput">x</code>.</p>
<p>Otherwise, if <code class="computeroutput">Format</code> models <code class="computeroutput">Callable&lt;<a class="link" href="structboost_1_1xpressive_1_1match__results.html" title="Struct template match_results">match_results</a>&lt;BidiIter&gt;, OutputIterator&gt;</code>, this function returns a <code class="computeroutput">string_type</code> object <code class="computeroutput">x</code> populated by calling <code class="computeroutput">fmt(*this, out)</code>, where <code class="computeroutput">out</code> is a <code class="computeroutput">back_insert_iterator</code> into <code class="computeroutput">x</code>.</p>
<p>Otherwise, if <code class="computeroutput">Format</code> models <code class="computeroutput">Callable&lt;<a class="link" href="structboost_1_1xpressive_1_1match__results.html" title="Struct template match_results">match_results</a>&lt;BidiIter&gt; &gt;</code>, this function returns <code class="computeroutput">fmt(*this)</code>. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">string_type</span> <a name="doxygen.structboost_1_1xpressive_1_1match__results_1a639c034ede34beb44357377fbda115f2"></a><span class="identifier">format</span><span class="special">(</span><span class="identifier">char_type</span> <span class="keyword">const</span> <span class="special">*</span> fmt<span class="special">,</span> 
                   <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">match_flag_type</span> flags <span class="special">=</span> <span class="identifier">regex_constants</span><span class="special">::</span><span class="identifier">format_default</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. </p>
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<pre class="literallayout"><span class="keyword">void</span> <a name="doxygen.structboost_1_1xpressive_1_1match__results_1aeabd8d33f39ae7cd3a6754b2a67d92b0"></a><span class="identifier">swap</span><span class="special">(</span><a class="link" href="structboost_1_1xpressive_1_1match__results.html" title="Struct template match_results">match_results</a><span class="special">&lt;</span> <span class="identifier">BidiIter</span> <span class="special">&gt;</span> <span class="special">&amp;</span> that<span class="special">)</span><span class="special">;</span></pre>
<p>Swaps the contents of two <a class="link" href="structboost_1_1xpressive_1_1match__results.html" title="Struct template match_results">match_results</a> objects. Guaranteed not to throw. 


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<td><p><span class="term">Parameters:</span></p></td>
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<td><p><span class="term"><code class="computeroutput">that</code></span></p></td>
<td><p>The <a class="link" href="structboost_1_1xpressive_1_1match__results.html" title="Struct template match_results">match_results</a> object to swap with. </p></td>
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<td><p><span class="term">Postconditions:</span></p></td>
<td><p>*this contains the sequence of matched sub-expressions that were in that, that contains the sequence of matched sub-expressions that were in *this. </p></td>
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<td><p><span class="term">Throws:</span></p></td>
<td>Will not throw.</td>
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<pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Arg<span class="special">&gt;</span> <a class="link" href="structboost_1_1xpressive_1_1match__results.html" title="Struct template match_results">match_results</a><span class="special">&lt;</span> <span class="identifier">BidiIter</span> <span class="special">&gt;</span> <span class="special">&amp;</span> <a name="doxygen.structboost_1_1xpressive_1_1match__results_1a0b5d9b054f18782e2e195dab5e39123a"></a><span class="identifier">let</span><span class="special">(</span><span class="identifier">Arg</span> <span class="keyword">const</span> <span class="special">&amp;</span> arg<span class="special">)</span><span class="special">;</span></pre>
<p>TODO document me </p>
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<div class="copyright-footer">Copyright © 2007 Eric Niebler<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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